US3532984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
R.m.s. voltmeter with impedance conversion and isolation means
Assignee: Western Reserve Electronics Inc
•
Filing: 1967-01-09
•
Granted: 1970-10-06
•
Expires: 1987-01-09
Abstract
No abstract record available.
Inventors
- 👤 David S Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:14
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2119364A
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US2521522A
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GB860681A
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US3041535A
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US3195064A
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US3064192A
Cited
US3256475A
Cited
US3268813A
Cited
US3281689A
Cited
US3360727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |